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Fertilizing value of a five years pasture ley in comparison with maize monoculture

dc.contributor.authorArrobas, Margarida
dc.contributor.authorAguiar, Peltier
dc.contributor.authorRodrigues, M.A.
dc.date.accessioned2018-02-06T12:02:02Z
dc.date.available2018-02-06T12:02:02Z
dc.date.issued2016
dc.description.abstractCrop rotation is one of the basic pillars of agroecology and sustainability of the production systems. Monoculture is only possible in areas without significant ecological constraints (soil fertility, available water, ...). In general, the more severe the ecological limitation for plant growth the longer should be the crop rotation and vice versa. Long‐course rotations usually permit the introduction of a pasture ley phase which could lead to a more consistent and fast increase in soil fertility. In this work the fertilizing effect of a ley phase of 5 years was compared with a maize monoculture maintained for an equal period of time. The pasture ley increased the pool of organic matter. In 5 years, the 0‐20 cm soil layer of the pasture phase sequestered 17.4 Mg ha‐1 of total organic carbon and accumulated 403 kg N ha‐1 more than the same layer of soil under maize monoculture. A maize crop grown after plough the 5 years pasture ley and after the 5 years of maize cultivation as a monoculture produced, respectively, 15.3 and 8.7 Mg dry matter per hectare and recovered 175.4 and 68.0 kg N ha‐1, being this difference the result of the nutrient release from the extra pool of organic matter that was built during the ley phase. The residual effect of the organic pool persisted in the second year of maize growth. Dry matter yield and N recovered were 10.0 and 8.4 Mg ha‐1 and 78.3 and 50.3 kg ha‐1, respectively in the previous pasture ley and maize monoculturept_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationArrobas, Margarida; Aguiar, Peltier; Rodrigues, M.A. (2016). Fertilizing value of a five years pasture ley in comparison with maize monoculture. In I International Conference on Research for Sustainable Development in Mountain Regions. Bragança: Instituto Politécnico. ISBN 978‐ 972‐ 745‐ 214‐ 9pt_PT
dc.identifier.urihttp://hdl.handle.net/10198/15569
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleFertilizing value of a five years pasture ley in comparison with maize monoculturept_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceBragançapt_PT
oaire.citation.endPage190pt_PT
oaire.citation.startPage190pt_PT
oaire.citation.titleI International Conference on Research for Sustainable Development in Mountain Regionspt_PT
person.familyNameArrobas
person.familyNameRodrigues
person.givenNameMargarida
person.givenNameManuel
person.identifier.ciencia-id971C-B85B-1EC0
person.identifier.ciencia-id371D-DF0D-8D68
person.identifier.orcid0000-0002-4652-485X
person.identifier.orcid0000-0002-5367-1129
person.identifier.ridO-1721-2016
person.identifier.scopus-author-id8575728800
person.identifier.scopus-author-id35270106800
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublicationd057ae6b-331c-4980-967d-0ce4fe1bcf8a
relation.isAuthorOfPublication43621353-fa11-4559-9b24-27eba5ad3de0
relation.isAuthorOfPublication.latestForDiscoveryd057ae6b-331c-4980-967d-0ce4fe1bcf8a

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